Fume-condensing apparatus.



L. 0. LAURENT.

rum: conmmsma APPARATUS.

APPLIOATIOI FILED AUG. 8, 1907.

Patented Dec. 22, 1908.

' I0 IIIIIIIIII'IIIII'IIIIIIIIIIII To all whom-it concern:

LOUIS Q- 141mm. 91* Drama. com-nano- Y rmmxnnnsme urns-m.

Be it known that I, Louis C. LAURENT, a citizen of the United Shim i the cit and county of Denver and State of Cole re 0, have invented -.-new and useful Improvements :in Fume-Condensing Apps-- ratus' and I do declare. the following to a full, clear, and exact descri 'tion of the invention, such as will enable ot ers skilled in the art to which it'appertains to make and use the same, reference had to the accomanying drawings, and to the letters and res of reference marked thereon, which form a part of this specification.

My invention relates to improvements in apparatus for the condensation of furnace fumes. It is adapted for use iwhereve'r the treatment of the ores resultsin the volatili zation 'of certain elements contained in the ore as sulfur, arsenic 8I1d '0th6l elements which when present render the ores refracto or incapable of successful and economica treatment for the of their'nretallic values. Wherever impurities assulfur and arsenic are'contained in the ores to any considerable degree, their volatilization and esca e in the form of fumes from roasting or sme ting furnaces, notonly vitiates the atmosphere of the surrounding territory for a distance of several miles, but-also destro s vegetation in the vicinity. This difiiculty in some sections of the country exists to such a remarkable degree, that the owners of land in the vicinity of the smelters have been obliged, as a matter of self protection, to bring suits for damages for the destruction of their crops. 1

The object of my resent invention is to overcome this diflicu t by condensing the fumes from furnaces of the aforesaid character, whereby the impurities are revented from escaping from the smoke stac Some of these condensed imgurities as sulfur which produces sulfuric aci may be utilized as commercial products.

Briefly stated my improved construction consists of an interposed inclined conduit between the furnace and the stack and means for introducin sprays of water into the conduit at suita le intervals whereby these sprays are located in'the path of the travel 0 the fumes, with the result, that all condensable roducts are reci itated in the conduit w 'chis provide at its bottom with a runway having outlets at suitable intervals s ecificatio 1 Letters Patent. a s s-MAW o, .1601. Serial. No. mm.

latented s2, 190s.

whereby the condensed products ma be gram 9E endeonducted to-any desired'l 11 I Having struction, proceed-to descri the same briefly outlined my impgoved coni in detail reference being made. to the 8Cc0m-rj= 1 anying drawin in which Embodiment the eof.

is illustrated an,

. In this drawing Figure 1 is an elevation of I a furnace and stack equipped with my improved condensing apparatus. Fig. 2 is a vertical longitudinal section taken through the condensing conduit, the parts being shown on a larger scale. Fig. 3 is a cross section taken through the conduit on a still lar r scale.

. he same referencecharacters indicate the same parts in all the views.

' Let the numeral 5 designate a furnace; 6 thetstack; and 7 an intermediate flue con- I100 throng which thefumes from the furnace pass to the stack. flue or conduit is somewhat inclined and should be provided with a lead lining 8, to prevent the acid formed by the condensation of the fumes, from attacln'ng the wood or other material of which the condensing flue is constructed. This flue is equipped on o posite, sides with ipes 9 which pass throug the walls of the us and terminate in spra nozzles 10 which protrude into the flue. esespray pipes are connected with a supply pipe 12 throu h which water is passed under pressure to t e branch fpipes 9, and thence to the nozzles 10 which rm it into a finely divided spray, the same being discharged into the conduit or flue. the flue from opposite sides and are preferably located near its lower part. These s ray nozzles may be arran ed at any suita le intervals that may beiound necessary for thoroughl condensing the fumes assing through the us. .For convenience t e bottom or lower wall of the flue is inclined downwardly toward the center forming a sort of runwaylsfor the liquid 13. Communicating with t runway and arranged at suitable intervals, are dischar e pipes 14 for getting rid of the condensed mes. A flange 15 is located adjacent the upper extremity of each pipe 14, within the condensing flue. These anges ass below then per extremity of the pipe 14 ut not above t e same, whereby the quid running down the flue is unobstructed ;the furnace with the stack and.

The spray pipes preferably enter main pipe 17 above the i es 14 but slightly dammed or interrupted elow these (pipes to facilitate the discharge of the .con ensed material. The spray pi es 9 are e uipped with valves 16,,for.co'ntro ing the charge; of liquid therethrough. I

The outlet pipes 14, communicate with a or carrying off the condensed products. j

From the foregoing description the use and operation of my improved aplparatus will be readily understood. When t e furnace is in use, the fumes are continuall passing through the .flue or conduit 7. imultaneously with the starting of the furnace, s rays 18 of liquid, as ,water, are introduce into the condensing flue from opposite sides thereof, the said sprays lying in the path of the fumes as they pass from the furnace to the stack. The sprays of liquid are deliv-' ered to the condensing flue at such intervals, as to thoroughly condense all combustible products. These condensed products naturally seek the bottom of theflue and are drawn off through the pipes 14 at suitable intervals.

Having thus described my invention, what I claim is:

1. In condensing apparatus, the combination with a. furnace andstack, of a flue connecting the furnace with the. stack and through which the furnace fumespass, the.

said flue being downwardly inclined from the stack to the furnace, and means for intr0d11c- 7 .is not retarded.

ing 1isprays into the flue at suitable interva s, the said s rays bei directed toward the stack, where y the dra of the furnace 2. The combination with a stack and furnace, of a lead-lined flue connect" the stack and furnace and downwardly inc 'ned from the former to. the latter, the flue bei equlpped' with means for deliveringliqui sprays thereinto the said sprays bein directed towards the stack, substantialFy as described,

3. The combination with a stack and furnace, of a flue forming a direct connection between the stack and furnace and downwardly inclined from the stack to the furnace, and suitable means located'at intervals for drawing off the condensed products from the flue, substantially as described.

4. The combination with a furnace and stack of a flue connectin the said structures and downwardly inclined from the stack to the furnace, the bottom of the flue being provided with a runway, means for introducing liquid sprays to the flue, and means located at intervals for drawing off the condensed products at the bottom of the flue, substantially asdescribed. v

In testimony whereof I affix my signature in presence of two witnesses.

. LOUIS C. LAURENT.

Witnesses:

DENA NELSON,

' MAY GAWLEY. 

